/*
 *      Copyright (c) 2018-2028, Chill Zhuang All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *  Redistributions of source code must retain the above copyright notice,
 *  this list of conditions and the following disclaimer.
 *  Redistributions in binary form must reproduce the above copyright
 *  notice, this list of conditions and the following disclaimer in the
 *  documentation and/or other materials provided with the distribution.
 *  Neither the name of the dreamlu.net developer nor the names of its
 *  contributors may be used to endorse or promote products derived from
 *  this software without specific prior written permission.
 *  Author: Chill 庄骞 (smallchill@163.com)
 */
package org.springblade.common.utils;

import java.util.Calendar;
import java.util.Date;

/**
 * 通用工具类
 *
 * @author Chill
 */
public class CommonUtil {

	/**
	 * @param date 生日
	 * @return 年龄
	 */
	public static Integer getAge(Date date) {

		// 使用默认时区和语言环境获得一个日历
		Calendar cal = Calendar.getInstance();
		int b = cal.get(Calendar.YEAR); // 当前的年
		int b1 = cal.get(Calendar.MONDAY) + 1; // 当前的月
		int b2 = cal.get(Calendar.DAY_OF_MONTH); // 当前的日
		cal.setTime(date);
		int a = cal.get(Calendar.YEAR); // 输入的年
		int a1 = cal.get(Calendar.MONDAY) + 1; // 输入的月
		int a2 = cal.get(Calendar.DAY_OF_MONTH); // 输入的日

		// 计算年龄
		int age = b - a;
		if (b1 < a1 || (b1 == a1 && b2 <= a2)) {
			age--;
		}
		return age;

	}
}
